.
1 headlamp
Introduction:
one
automotive headlamp assembly is to ensure safe operation of important components of the lamp according to the headlamp the greater the distance, the better the light distribution characteristics, vehicle safety performance driving higher. With the development of automotive technology, car headlamps have changed a lot. On modern cars, the past that the removable incandescent light bulbs and incandescent headlamps are vacuum has been eliminated and replaced by halogen headlamps, swept the world a few years of effort, has become the main national car headlights. Type
Automotive headlamps are generally incandescent, halogen, and xenon:
type. With the continuous development of automobile technology in the past that a vacuum incandescent lamp has already been eliminated. Now the car headlight halogen lamp, a xenon lamp oriented.
halogen:
Halogen is penetration of a small amount of an inert gas within the bulb iodine, the reaction from the filament meets evaporated tungsten atoms and an iodine atom, generating iodide tungsten compounds, when contacting an iodide compound intense tungsten filament (temperature exceeds 1450 deg.] C), will decompose and the iodine is reduced to tungsten, tungsten filament again back to rejoin, iodine gas is re-entered. And so on incessantly, barely blown filament, the bulb will not be black, so it is longer than the traditional incandescent headlamps life, greater brightness. Now cars are widely used headlamp.
a halogen lamp has a unique structure of the light distribution, the two inner Each light filament, a main beam filament is set, the light emitted by the shade reflecting mirror to shoot straight forward, such a light source that is, we usually say ldquo; high beam rdquo ;. Another is the partial beam filament, the light shielding plate to stop to shade the upper half mirror emitted, which light is reflected off of the ground down to the diffusion, to the driver without dazzling oncoming vehicles cause this light is what we usually call ldquo; low beam rdquo ;.
Xenon:
a xenon lamp, is the English abbreviation HID. The brightness of light emitted from it is twice as common halogen lamps, and energy consumption is only two-thirds of its service life up to ten times the ordinary halogen lamps. Xenon lamps greatly increases safety and driving comfort, but also help ease the tension and people driving at night fatigue. Dangerous drivers can be found in the first time, to obtain a sufficient reaction time, significantly reduces the incidence of accidents at night. At present, the launch of the new Audi, Passat, Buick Regal, Mazda and other luxury models are equipped with Xenon headlamps. From a market point of view, xenon headlamps will become the mainstream market.
uses a halogen bulb using a conventional headlight ldquo; combustion emission rdquo; generating an illumination mode, the “HID” is the use of “jump-in light emission” illuminated. The former is like barbecue, light coals issued; and when the latter light on the factory site welding is similar to that emitted light which one of these two relatively bright it? You may wish to compare actual observations. The experimental data show that the light emission luminance “HID” three times the conventional headlamp, the irradiation distance was twice that of conventional headlight.